import random
import time

import pytest
import requests
import json
from unittest.mock import patch, MagicMock

# 配置信息
API_URL = "https://cvm.tencentcloudapi.com/"
REGION = "ap-guangzhou"
SECRET_ID = "your-secret-id"  # 实际测试中应从环境变量获取
SECRET_KEY = "your-secret-key"  # 实际测试中应从环境变量获取


def generate_signature(params, secret_key):
    """生成签名（模拟实现）"""
    # 实际签名算法需要按照腾讯云API规范实现
    # 这里仅作模拟
    return "mock-signature"


def send_request(action, params):
    """发送API请求（模拟实现）"""
    common_params = {
        "Action": action,
        "Version": "2017-03-12",
        "Region": REGION,
        "SecretId": SECRET_ID,
        "Timestamp": int(time.time()),
        "Nonce": random.randint(1, 1000000),
        "SignatureMethod": "HmacSHA256"
    }
    all_params = {**common_params, **params}
    all_params["Signature"] = generate_signature(all_params, SECRET_KEY)

    response = requests.post(API_URL, data=all_params)
    return response.json()


class TestExitRescueMode:
    @patch('requests.post')
    def test_exit_rescue_mode_success(self, mock_post):
        """测试成功退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "RequestId": "1234567890",
                "TaskId": "task-123456"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-valid-id"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "TaskId" in result["Response"]

    @patch('requests.post')
    def test_exit_rescue_mode_invalid_instance(self, mock_post):
        """测试使用无效实例ID退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "InvalidInstanceId.NotFound",
                    "Message": "实例ID不存在"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-invalid-id"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "InvalidInstanceId.NotFound"

    @patch('requests.post')
    def test_exit_rescue_mode_empty_params(self, mock_post):
        """测试不传递实例ID退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "MissingParameter.InstanceId",
                    "Message": "缺少必需参数InstanceId"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "MissingParameter.InstanceId"

    @patch('requests.post')
    def test_exit_rescue_mode_instance_not_found(self, mock_post):
        """测试使用不存在的实例ID退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "InvalidInstanceId.NotFound",
                    "Message": "实例不存在"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-nonexistent"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "InvalidInstanceId.NotFound"

    @patch('requests.post')
    def test_exit_rescue_mode_not_in_maintenance(self, mock_post):
        """测试不在维护模式的实例退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "InvalidInstanceState.NotInMaintenance",
                    "Message": "实例不在维护模式中"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-not-in-maintenance"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "InvalidInstanceState.NotInMaintenance"

    @patch('requests.post')
    def test_exit_rescue_mode_instance_locked(self, mock_post):
        """测试被锁定的实例退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "InvalidInstanceId.Locked",
                    "Message": "实例被锁定，无法退出救援模式"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-locked"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "InvalidInstanceId.Locked"

    @patch('requests.post')
    def test_exit_rescue_mode_invalid_state(self, mock_post):
        """测试状态不支持的实例退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "InvalidInstanceState",
                    "Message": "实例状态不支持退出救援模式"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-invalid-state"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "InvalidInstanceState"

    @patch('requests.post')
    def test_exit_rescue_mode_permission_denied(self, mock_post):
        """测试无权限操作实例退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "AuthFailure.UnauthorizedOperation",
                    "Message": "无权限执行此操作"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-no-permission"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "AuthFailure.UnauthorizedOperation"

    @patch('requests.post')
    def test_exit_rescue_mode_resource_unavailable(self, mock_post):
        """测试资源不可用情况下退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "ResourceUnavailable",
                    "Message": "资源不可用，无法退出救援模式"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-resource-unavailable"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "ResourceUnavailable"

    @patch('requests.post')
    def test_exit_rescue_mode_operation_conflict(self, mock_post):
        """测试操作冲突情况下退出救援模式"""
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "Response": {
                "Error": {
                    "Code": "OperationConflict",
                    "Message": "操作冲突，当前有其他操作正在进行"
                },
                "RequestId": "1234567890"
            }
        }
        mock_post.return_value = mock_response

        params = {"InstanceId": "ins-operation-conflict"}
        result = send_request("ExitMaintenanceMode", params)

        assert "Response" in result
        assert "Error" in result["Response"]
        assert result["Response"]["Error"]["Code"] == "OperationConflict"


# 启动测试函数
def run_tests():
    pytest.main([__file__, "-v", "-s"])


if __name__ == "__main__":
    run_tests()